Mercedes W205 Front Window Frame Door Left N/S Moulding Gasket A2057254700

Mercedes W205 Front Window Frame Door Left N/S Moulding Gasket is an original body component from the Window seals and mouldings category, designed for installation in the front left door. It ensures a tight window guide, reduces wind noise, improves cabin acoustic comfort, and provides an aesthetic finish to the door edge.

Specifications and technical data

• SKU: A2057254700
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2057254700
• Substitutable numbers: A2057254700, A 205 725 47 00
• Location on the vehicle: Front, Left
• Category: Window Seals, Gaskets & Trims

Purpose and function of the component

The presented window frame gasket is dedicated for installation in the front left door of Mercedes W205 class vehicles. It is responsible for properly sealing the window perimeter, ensuring stable guidance within the channels, and protecting the interior of the door from water and debris ingress. A properly selected gasket reduces wind noise at higher speeds and helps maintain the correct operating conditions for the window regulator mechanism.

Construction and body fitment

The Mercedes W205 Front Window Frame Door Left N/S Moulding Gasket has been designed as a component perfectly matched to the contour of the door frame in the W205 body. The working profile of the gasket interacts with the edge of the glass and the outer part of the frame, creating a tight seal along the entire perimeter. The original geometry ensures:

• proper adhesion to the glass along the entire length of the frame,
• stable seating in the door slot without the need for modifications,
• maintenance of factory assembly clearances and window guidance. Thanks to this, the installation process is predictable, and after replacement, you can achieve parameters close to factory standards in terms of sealing and acoustics.

Benefits of using an original gasket

Using an original window frame gasket in a Mercedes W205 allows for the restoration of proper operating conditions for the entire door assembly. Key advantages include:

• reduction of cabin noise by limiting wind noise around the upper edge of the door,
• better protection against water and moisture in the window guide area,
• more stable window guidance during raising and lowering,
• maintenance of a consistent visual line of the door frame with other body elements. Replacing a worn or deformed gasket is particularly recommended when creaking occurs when closing the door, noticeable air drafts near the pillar, or traces of water near the door upholstery.

Characteristics of the used product

The offered item is a used part, sourced from the dismantling of a Mercedes vehicle. Such components are frequently chosen for body repairs because they allow for the preservation of the original material specification and profile shape, while also reducing costs compared to purchasing a new part. In the case of window frame gaskets, it is particularly important that the profile is not excessively deformed, which translates into sealing effectiveness after installation.

Comprehensive service for Mercedes window and door zones

If you are planning a comprehensive repair or upgrade of the window and door zone in your Mercedes and need other parts from the same group, such as additional perimeter seals, trim strips, or window guides, check out the available parts in the Mercedes window seals and mouldings category.

Practical service tips and selecting used parts

When working with components sourced from dismantling, it is worth knowing the general principles of safely selecting used components. Materials regarding the assessment of the condition of fuel system parts may be helpful – many of the principles described there (verifying tightness, checking working surfaces, assessing signs of wear) can also be applied to other sub-assemblies. More practical information can be found in the article: Fuel dosing problems: what to look for when buying a used injection pump and fuel rails?.